In 1934, when Gillespie brought him the lyrics to "Santa Claus Is Coming to Town", Coots came up with the skeleton of the music in just ten minutes. Coots took the song to his publisher, Leo Feist Inc., who liked it but thought it was "a kids' song" and didn't expect too much from it.[7] Coots offered the song to Eddie Cantor who used it on his radio show that November and it became an instant hit. The morning after the radio show there were orders for 100,000 copies of sheet music and by Christmas sales had passed 400,000.

^Harry Engel (1894 Vienna, Austria – 1965 Los Angeles) had been a sheet music traveling salesman for Richmond-Robbins, Inc. — Maurice Aaron Richmond (1878–1965) and nephew, John J. (Jack) Robbins (1894–1959) — then Robbins-Engel, Inc., the Irving Berlin; then after his affiliation with Davis, Coots & Engel, Inc., he went on to become head of West Coast Operations for BMI